2.5V fixed reference for precision analog chains
The REF3125AIDBZT from Texas Instruments is a series voltage reference that delivers a fixed 2.5V output with ±0.2% initial accuracy and a 20ppm/°C temperature coefficient. It operates from a 2.55V to 5.5V input supply, drawing only 135µA quiescent current. The low noise floor — 33µVp-p from 0.1Hz to 10Hz and 48µVrms from 10Hz to 10kHz — makes it suitable for driving the reference input of a SAR ADC or a precision DAC without additional filtering.
Housed in a SOT-23-3 package (also referenced as TO-236-3 or SC-59), the REF3125AIDBZT occupies minimal board area.
Listed as Active by the manufacturer.